For example, you can say "Alexa, what's the temperature in the bedroom?". The temperature tolerance is within ±0.5°C and the humidity is within ±5%RH. Bluetooth is only used for network signal connection and cannot be used alone.
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OFW Optical Fiber Identifier Live Fiber Identifier Live Fiber Detector with Visual Fault Locator LED Light 700-1700nm SM MM
Aliexpress UK
Cork mode: beech, spruce, larch, birch, cherry, walnut, willow, fir, cork, cedar. Over range alarm. Brick wall mode: brick wall, stone wall, floor. Inductive non-destructive testing, high-sensitivity sensor.
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Wireless Signal Repeater Amplifier Learning Code Extender for 433MHz Alarm System and Wireless Detector Sensor Alarm
Aliexpress UK
Press the power button to turn on the machine;. Automatic shutdown: after 15 minutes of no operation. Size: 145 67 32mm.
eBay
KERUI WIFI GSM Alarm System Kit W202 Home Security Protection Tuya Smart Support Alexa with Motion Detector Door Opening Sensor
Aliexpress UK
3-bit LED digital tube displays the humidity clearly. Sensor type: HM-40. 1 x Temperature Sensor Probe with Cable.
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FUERS WIFI GSM Alarm System Wireless Home Burglar Security Alarm System Tuya APP Control Siren Motion Detector PIR Smoke Sensor
Aliexpress UK
Dust and Water Protection: IP65. When relative humidity is 5% - 90%,the accuracy is ±3% RH (5% to 90% RH - ±3% RH);. When relative humidity is 91% - 95%,the accuracy is ±5% RH (91% to 95% RH - ±5% RH).
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GSM Alarm System Tuya Wifi 4GSecurity Alarm System 433MHZ Works With Alexa Home Burglar Motion Detector Smoke Door Window Sensor
Aliexpress UK
Press the power button to turn on the machine. Large LCD display. Press the power button to switch off the unit, or automatically after 15 minutes. Electrode pins: integrated. Color: Black.
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ARW22347 USB RF Power Meter 0.1~7.1Ghz 24Bit ADC Signal Source Antenna Gain Detector 868Mhz 915Mhz 2.4Ghz 5.8Ghz Radio Amplifier
Aliexpress UK
It also has a 3-colour LED bar graph, a data hold function for recording data, and a low battery indicator. 【Red Backlight Alarm Value Setting】: The default value for the red backlight alarm is 12.0%.
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PGST WiFi GSM 2G Tuya Smart Life Home Alarm Security System Kit Alexa Automation Alarm Security Protection Door Motion Detector
Aliexpress UK
The temperature tolerance is within ±0.5°C and the humidity is within ±5%RH. Bluetooth is only used for network signal connection and cannot be used alone. WIFI+Bluetooth is more stable. Humidity accuracy: ±5%RH.
eBay
KERUI W204 Security Alarm System For Home WiFi 4G GSM Alarm Burglar 433MHz Wireless Siren Tuya Smart Motion Detector Sensor Cam
Aliexpress UK